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README.md

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+# Polynomial Expansion and Factoring Dataset
+
+This dataset contains problem and solution pairs for polynomial expansion and factoring. Each problem is a result of expanding and factoring the `(x + n)^2` form expression, where `n` takes values from -1000 to 1000.
+
+## Dataset Structure
+
+- `factorized_dataset.csv`: CSV file containing the dataset.
+- `README.md`: This file that provides an overview and usage instructions for the dataset.
+
+## Data Format
+
+The CSV file of the dataset includes the following columns:
+
+- `Instruction`: A description of the problem. It indicates the expression that should be expanded or factored.
+- `Output`: The answer expression.
+
+## Sample Data
+
+| Instruction                       | Output             |
+|-----------------------------------|--------------------|
+| Expand the expression: (x + 3)**2  | x**2 + 6*x + 9     |
+| Factorize the expression: x**2 + 6*x + 9   | (x + 3)**2         |
+| Expand the expression: (x - 7)**2  | x**2 - 14*x + 49   |
+| Factorize the expression: x**2 - 14*x + 49 | (x - 7)**2         |
+...
+
+## Dataset Information
+
+- Number of samples: 2002 (due to the range of n from -1000 to 1000)
+- Dataset format: CSV file
+- Date of generation: [insert date of dataset generation]
+
+
+
+
+
 # 数式の展開と因数分解データセット
 
 このデータセットは、数式の展開と因数分解の問題と解答のペアを含んでいます。各問題は、`sympy`ライブラリを使用して、`(x + n)^2`形式の数式を展開し、因数分解した結果です。